i want to know the difficulty of this task of putting vtec b18 head on my b20. are there any special things needed to be done

 

From messing with it in the past, the head don't line up correctly if I remember correctly. I believed several of the head bolt head doesn't line up. Also, the b20a5 block lean too far to the back for a good fit into an eg/dc body. Again, it has been a while since I mess with it so some detail might be off.

 

The older Prelude B20's are completely different from the B20B/Z's from the CRV. Installing a DOHC VTEC head onto the older B20 isn't really possible (sure anything is possible but to make it work... good luck).

 

[Bi wouldnt do it, its not worth it. why would you want to put a 1.8 liter head on a 2.0 liter block. it dont make sinceB]

b16=1.6 liter
b18=1.8
b20=2.0
h22=2.2

i think you should learn your codes

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by helpmeplease &raquo;</TD></TR><TR><TD CLASS="quote"> why would you want to put a 1.8 liter head on a 2.0 liter block. it dont make since</TD></TR></TABLE>

Your post makes no sense. There are a lot of reasons to put a 1.8, or even a 1.6L head on a 2L block. It is done all the time. The vtec head on the b16 flows better than any b20 head and gives you much better cam options.

I know you were trying to help, but please don't post unless you are really familiar with the subject under discussion.

 

Top Ramen is half right.
Ive got a really good friend who has a B18 vtec head on a B20 block
and its turbo, putting the B18 vtec head on the B20 block makes VERY little compression making it one of the best honda motors//combo's to apply a turbo too
this car is built one of a kind custom turbo kit (everything...ECU is one of a kind, turbo manifold is one of a kind anything u can name.)
This car makes nearly 600 horsepower at the wheels

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecUnderPressure &raquo;</TD></TR><TR><TD CLASS="quote">Top Ramen is half right.
Ive got a really good friend who has a B18 vtec head on a B20 block</TD></TR></TABLE>

That's not the same b20 block that we're talking about though.

 

Maybe you guys are all too young to remember Tom from Ludespeed.

Back in 2000

 

OK U SAY, THERE IS CHANCE TO PUT B18 VTEC head in a b20 block...

now, my question is... are you talking about the B20A1-5 (like 80's prelude) or B20B (newest one)..

cause if it is.. can you give me more inf. about to make that swap i have a b20a5 block here but i would like to do a head swap...

thank you

 

is there any b18 or b16 vtec head that will on a b20a5 because I want vtec on my 1991 prelude

 

Nope.